 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; programmes
-(defn slugify-programme [programme]
-  (assoc programme :slug (:name programme)))
-
 (defn programmes-table [data owner]
   (reify
     om/IRender


(defn projects-div [data owner]
  (reify
    om/IDidUpdate
    (did-update [_ prev-props prev-state]
      (let [{:keys [programmes projects active-components]} data
            new-programme_id (:programmes active-components)]

        ;; handle selection in programme table
        (when-not new-programme_id
          (om/update! projects :data [])
          (om/update! projects :selected nil))

        ;; get the data if we have a new id
        (if (and new-programme_id
                 (not (= (:programme_id projects) new-programme_id)))
          (do
            (om/update! projects :fetching :fetching)
            (GET (str "/4/programmes/" new-programme_id "/projects/")
                 {:handler  (fn [x]
                              ;; (println "Fetching projects for programme: " new-programme_id)
                              (om/update! projects :data (mapv slugify-project x))
                              (om/update! projects :fetching (if (empty? x) :no-data :has-data))
                              (om/update! projects :selected nil))
                  :error-handler (fn [{:keys [status status-text]}]
                                   (om/update! projects :fetching :error)
                                   (om/update! projects :error-status status)
                                   (om/update! projects :error-text status-text))
                  :headers {"Accept" "application/edn"}
                  :response-format :text})))

        ;; update our current id with the new one
        (om/update! projects :programme_id new-programme_id)

        ;; handle selection in projects table
        (om/update! projects :selected (:projects active-components))))
    om/IRender
    (render [_]
      (let [{:keys [programmes projects active-components]} data

      (vector new-selected
              (map-replace template ids)))))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Slugs
(defn slugify-programme [programme]
  (assoc programme :slug (:name programme)))

(defn slugify-project "Create a slug for projects in the UI"
  [project]
  (assoc project :slug (:name project)))

(defn slugify-property
  "Create a slug for a property in the UI"
  [property]
  (let [property_data (:property_data property)]
    (assoc property
      :slug
      (apply str (str/join
                  ", "
                  (->> (vector (:property_code property)
                               (:address_street_two property_data)
                               (:address_code property_data)
                               (:address_country property_data))
                       (keep identity)))))))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Data Fetchers
(defn fetch-projects [programme-id data]
  (om/update! data [:projects :programme_id] programme-id)
  (om/update! data [:projects :fetching] :fetching)
  (GET (str "/4/programmes/" programme-id "/projects/")
       {:handler  (fn [x]
                    (println "Fetching data for programme: " programme-id)
                    (om/update! data [:projects :data] (mapv slugify-project x))
                    (om/update! data [:projects :fetching] (if (empty? x) :no-data :has-data))
                    (om/update! data [:projects :selected] nil))
        :error-handler (fn [{:keys [status status-text]}]
                         (om/update! data [:projects :fetching] :error)
                         (om/update! data [:projects :error-status] status)
                         (om/update! data [:projects :error-text] status-text))
        :headers {"Accept" "application/edn"}
        :response-format :text}))

(defn history-loop [history-channel data]
  (go-loop []
    (let [nav-event (<! history-channel)
          {:keys [programmes projects properties]} (-> nav-event :args :ids)
          old-nav (:active-components @data)
          old-programmes (:programmes old-nav)
          old-projects (:projects old-nav)
          old-properties (:properties old-nav)]
      (println "Old Programmes: " old-programmes " Old Projects: " old-projects " Old Properties: " old-properties)
      (println "New Programmes: " programmes " New Projects: " projects " New Properties: " properties)
      (println "New Active Components: " (-> nav-event :args :ids))

      ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
      ;; Clear down
      (when (and old-programmes
                 (nil? programmes))
        (println "Clearing projects.")
        (om/update! data [:projects :data] []))

      (when (and old-projects
                 (nil? projects))
        (println "Clearing properties.")
        (om/update! data [:properties :data] []))

      (when (and old-properties
                 (nil? properties))
        (println "Clearing devices, sensors and measurements.")
        (om/update! data [:devices :data] [])
        (om/update! data [:sensors :data] [])
        (om/update! data [:measurements :data] []))

      ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
      ;; Fetchers
      (when (and programmes
                 (not= programmes old-programmes))
        (println "Setting selected programme to: " programmes)
        (om/update! data [:programmes :selected] programmes)
        (fetch-projects programmes data))
      
      (om/update! data :active-components (-> nav-event :args :ids)))
    (recur)))

